Service Guide SW-i2.1 1100
SERVICE GUIDE
KYE SYSTEMS CORP
SW-i2.1 1100
Version:1.0
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Service Guide SW-i2.1 1100
Revision History
Version Change
VER1.0
Date
Nov-08.2005
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Service Guide SW-i2.1 1100
Table of Contents
Revision History 2
Table of Contents 3
Getting Started 4
Conventions Used in this Guide 4
Safety Precautions 4
Chapter 1. How to Handle Defective Returns 5
1.1 Overview 5
1.2 Problems 6
1.2.1 Satellite channels no sound 7
1.2.2 Woofer channel no sound 8
1.2.3 Woofer no power 9
Chapter 2. Specifications Satellite 10
10
Chapter 3. Block Diagr
Chapter 4. Exploded View
Chapter 5. Part List 14
Chapter 6. Schematic Diagram 15
Chapter 7. Important Notes 16
7.1 Packing Requirement for Sending the PCB Assembly by post 16
7.2 Short of Spare Parts while Repairing a Speaker system 16
am 11
Host(Woofer)
Satellite 12
Host(Woofer)
13
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Service Guide SW-i2.1 1100
Getting Started
Conventions Used in this Guide
Pay Special Attention: Instructions that are important to remember and may
prevent mistakes.
Caution: Information that, if not followed, may result in damage to the
product.
Safety Precautions
The following precautions should be observed in handling the speaker
described in this guide:
Place the speakers on a flat, level and stable surface.
Do not place the speakers in environments subject to mist, smoke,
vibration, excessive dust, salty or greasy air, or other corrosive gases and
fumes.
Do not drop or jolt the speakers.
Do not allow anything to drop into the subwoofer case through its
ventilator, as it could result in fatal electric shock or fire.
Place the unit far enough from other equipments for good heat dissipation.
Disconnect the AC power cord from the AC outlet before performing any
maintenance on the speakers.
Do not perform any maintenance with wet hand.
Prevent foreign substances, such as water, other liquids or chemical, from
entering the speakers while performing maintenance procedures on the
speakers.
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Service Guide SW-i2.1 1100
g
y
Chapter 1. How to Handle Defective Returns
1.1 Overview
Receiving Defective speaker form customers
Verifying problems
proceeding
necessary tests
Function NG
Analyzing possible
malfunction causes
Function OKFunction NG
Deciding & proceeding the
rectification methods
Replace necessary
defective parts
Proceeding tests to
verify if the speaker is
functionin
normall
Function OK
Return the speakers with proper
repackaging to customers
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Service Guide SW-i2.1 1100
1.2 Problems
Item Problem Description
1.2.1 channels no sound
1.2.2
1.2.3
Woofer channel no sound
Woofer no power
Satellite
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* Attention
Please follow the numbered sequence marked within parenthesis given in individual
Flow chat, in that this is the best-recommended sequence to rectify the problems.
1.2.1 Satellite channels no sound
Problem
Analyzer and
Identify the Causes
Solutions
Broken or short circuit
Check solder points on
PCB
Satellite channels no sound
Defective
U2,C8 C9 C15 C16 C27
C28 U4
remote Control Cable
Check and replace
defective IC or
components
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
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1.2.2 Woofer channel no sound
Problem
Analyzer and
Identify the Causes
Solutions
Broken or short circuit
Check solder points on
PCB
Woofer channel no sound
Defective
U3,U4,C1
defective IC or
components
2,C23,VR1
Remote control cable damaged
or speaker damaged
replace defective cable
or speaker
Check and replace
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Service Guide SW-2.1 1100
1.2.3 no power
Problem
Analyzer and
Identify the Causes
Solutions
Broken or short circuit
no power
Defective
D1~D4,
SW1
AC power cable dis-connect
or remote control cable damaged
Check solder points on
PCB
Check and replace
defective SW or
components
Re-connected AC power Cable
or replace defective Cable
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Service Guide SW-i2.1 1100
Chapter 2. Specifications
Satellite (AT 1KHZ):
NO Description Unit Specifications
1 Out Power at THD 10% W 5 ± 0.5
2 Sensitivity mV 320 ± 50
3 Freq Response (Ref:-3dB) Hz 75~20K
4 S/N ratio dB
5 Hum & Noise Vol:max mV
Host(woofer) (A
T 100HZ):
≧ 50
≦ 3
NO Description Unit Specifications
1 Out Power at THD 10% W 18± 3
2 Sensitivity mV 180 ± 50
3 Freq Response (Ref:-3dB) Hz 17~200Hz
4 S/N ratio dB
5 Hum & Noise Vol:max mV
≧ 45
≦ 5
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Chapter 3. Block Diagram
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Satellite
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Host(Woofer)
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Chapter 5. Part List
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Chapter 6. Schematic Diagram
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Service Guide SW-i2.1 1100
Chapter 7. Important Notes
7.1 Packing Requirement for Sending the PCB Assembly by Post
PCB assembly is a kind of sophisticated electronic circuit board. Well
packing will be required when sending them by post.
* Some sophisticated IC components are mounted on the PCB assembly,
hence it is necessary to pack each PCB assembly with a separate static
protecting bag, in order to avoid static electricity.
* Reliable external packing is also very important when sending PCB
assembly by post, in that it would avoid unnecessarily lost or damage.
7.2 Short of Spare Parts while Repairing a Speaker System
If you are short of spare parts when you have some speaker systems waiting
to be repaired, it would be recommended to take the necessary parts form
one speaker system, so that you may have the as many speaker systems.
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